Use the Sign-in Helper to reset your Yahoo password and recover or reset your account password, however for account security, we'll only display some of the options below..
• Go to the Sign-in Helper.
• Enter your phone number or email address.
• Click Continue.
• If prompted, enter the CAPTCHA code.
• If you can receive text messages to the number listed, click yes, text me an Account Key. If you have access to the email address listed, click yes, send me an Account Key.
• Depending on the option you've selected, Yahoo will send an Account Key to your phone or email.
• Enter the Account Key that Yahoo sent in the field provided, and then click Verify.
• Select an account to reset from the list connected to your mobile number or email address.
• Click Continue.